Part 4

The Great Eastern was to attempt to solve by her bulk the problem of coal capacity which was later to be solved by high pressures and surface condensation. The ship finally determined on was 680 feet long, 83 feet broad, with a mean draught of 25 feet, with screw engines of 4,000 indicated horse-power and paddle-engines of 2,600, to work with steam from 15 to 25 pounds pressure—thus curiously uniting in herself at this transition period the two rival systems of propulsion. She was begun at Millwall, London, in the spring of 1854, and was finally launched, after many difficulties, on January 30, 1858. Her history is too well known to be dwelt upon here. She has experienced many vicissitudes and misfortunes, and it is well that her great projector (who paid for her with his life, as he died the year after her launching) did not live to see her used as an exhibit, in 1886, in the River Mersey, her great sides serving to blazon the name and fame of a Liverpool clothing establishment. She was sold the next year for the pitiful sum of £8,000 and broken up.

The year 1855 marks the high-water mark of the paddle-steamer era. In that year were built the Adriatic, by the Collins line, and the Persia, as a competitor (and the twenty-eighth ship of the company), by the Cunard. But the former was of wood, the latter of iron. She was among the earlier ships of this material to be built by the Cunard company, and, with the slightly larger Scotia, built in 1862, was, for some years after the cessation of the Collins line, the favorite and most successful steamer upon the Atlantic. She was 376 feet long, 45 feet 3 inches broad, and of about 5,500 tons displacement. Her cylinders were 100-1/2 inches diameter, with 120 inches stroke, and she had—as also the preceding ship, the Arabia—tubular boilers instead of the old flue.

1830 +------------------------------------ 9 lbs. | 1840 +---------------------- 5-1/2 „ | 1850 +---------------- 4 „ | 1860 +------------ 3.1 „ | 1870 +---------- 2.6 „ | 1880 +-------- 2.2 „ | 1886 +------ 1.5 „ and | since|

Diagram showing Decrease in Expediture of Coal per indicated Horse-power per hour based on Good Average Practice

1830— 2 @ 3 lbs. +-- 1835— 5 lbs. +-- 1840— 8 „ +-- 1845—10 „ +-- 1850—14 „ +--- 1855—21 „ +---- 1860—30 „ +----- 1865—40 „ +------- 1870—50 „ +--------- 1875—60 „ +----------- 1880—70 „ +------------- 1882—80 „ +--------------- 1885-6—150 @ 180 lbs. +-------------------------------- and since

Diagram showing increase in Steam-pressures based on good average Practice

How great an advantage she was upon their first ship will be seen by the following comparison:

Britannia. Persia. Coal necessary to steam to New York 570 tons 1,400 tons Cargo carried 224 „ 750 „ Passengers 90 250 Indicated power 710 3,600 Pressure per square inch 9 lbs. 33 lbs. Coal per indicated horse-power per hour 5.1 „ 3.8 „ Speed 8.5 knots 13.1 knots

Thus, for two and a half times the quantity of coal nearly three and a half times the cargo was carried, and nearly three times the number of passengers. This result was due partially to increased engine efficiency, and partially to increased size of ship; and thus to a relative reduction of the power necessary to drive a given amount of displacement.

The Scotia was almost a sister ship to the Persia, slightly exceeding her in size, but with no radical differences which would mark her as an advance upon the latter. She was the last of the old régime in the Atlantic trade, and the same year in which she was built saw the complete acceptance by the Cunard company of the newer order of things, in the building of the iron screw steamer China, of 4,000 tons displacement, with oscillating geared screw engines of 2,200 indicated horse-power, with an average speed of 12.9 knots on a daily expenditure of 82 tons of coal. She was the first of their ships to be fitted with a surface condenser. The Scotia had been built as a paddle steamer rather in deference to the prejudices of passengers than in conformity to the judgment of the company, which had put afloat iron screw ships for their Mediterranean trade as early as 1852 and 1853.

* * * * *

The introduction of surface condensation and of higher pressures were the two necessary elements in a radical advance in marine engineering. Neither of these was a new proposal;[3] several patents had been taken out for the former at a very early date, both in America and in England; and in 1838 the Wilberforce, a boat running between London and Hull, was so fitted. Very high pressures, from almost the very beginning, had been carried in the steamers on our Western waters; and in 1811 Oliver Evans published, in Philadelphia, a pamphlet dealing with the subject, in which he advocated pressures of at least 100 to 120 pounds per square inch, and patented a boiler which was the parent of the long, cylindrical type which came into such general use in our river navigation. The sea-going public resolutely resisted the change to high pressures for nearly forty years, there being a very slow and gradual advance from 1 and 2 pounds to the 8 and 9 carried by the Great Britain and Britannia. In 1850 the Arctic carried 18 and in 1856 25 was not uncommon. Some of the foremost early engineers favored cast-iron boilers (see evidence before parliamentary committee, 1817); and the boiler in general use in England up to 1850 was a great rectangular box, usually with three furnaces and flues, all the faces of which were planes.[4]

Though tubular boilers did not displace the flue boiler in British practice to any great degree before 1850, many examples were in use in America at that date, but chiefly in other than sea-going steamers. Robert L. Stevens, of Hoboken, built as early as 1832 “the now standard form of return tubular boilers for moderate pressures” (Professor R. H. Thurston). But it worked its way into sea practice very slowly; and the multitubular boiler, in any of its several forms, cannot be said to have been fairly adopted in either American or British sea-going ships before the date first mentioned, though employed in the Hudson River and Long Island Sound steamers, in one of the former of which, the Thomas Powell, built in 1850, a steam pressure of 50 pounds was used.

There had been this slow and gradual advance in ocean steam pressures, with a consequent reduction in coal expenditure, when in 1856 came a movement in the direction of economy by the introduction of the compound engine, by Messrs. Randolph Elder & Co. (later John Elder & Co.), which was soon to develop into a revolution in marine steam enginery. The Pacific Steam Navigation Company has the credit of first accepting this change in applying it to their ships, the Valparaiso and Inca. The original pressure used was 25 pounds to the inch: the cylinders were 50 and 90 inches in diameter, and the piston speed from 230 to 250 feet per minute. The idea of using steam expansively by this means was of course not new, as it dates back to Hornblower (1781), but with the low pressures which had been used at sea there was no reason for its adoption afloat. Difficulties were experienced by the Pacific company with their earlier engines, but the line adhered to their change, and for nearly fourteen years were almost alone in their practice.

These changes made the use of a cylindrical boiler necessary, as the form best able to withstand the increased pressure. The old box-like shape has disappeared; and if the shade of Oliver Evans is ever able to visit us, it must be with an intense feeling of satisfaction to find his ideas of eighty years since now accepted by all the world.

* * * * *

The date 1870 marks the advent of a new type of ship, in those of the Oceanic Company, better known as the White Star line, built of iron by Harland & Wolff, of Belfast—engined with compound engines, and of extreme length as compared with their breadth. They established a new form, style, and interior arrangement, which has largely been followed by other lines, though the extreme disproportion of length and beam is now disappearing. The Britannic and Germanic, the two largest of the earlier of this line, are 468 feet in length and 45 feet 3 inches in beam, carrying 220 cabin passengers and 1,100 in the steerage, besides 150 crew. They develop 5,000 indicated horse-power, and make their passage, with remarkable regularity, in about 8 days 10 hours to Queenstown. The earlier ships of this line, when first built, had a means of dropping their propeller-shaft so as to immerse more deeply the screw; so many inconveniences, however, were associated with this that it was given up. Their general arrangement was a most marked advance upon that of their predecessors—an excellent move was placing the saloon forward instead of in the stern, a change almost universally followed.

In the same year with the Britannic came out the City of Berlin, of the Inman line, for some years the largest steamer afloat (after the Great Eastern), being 520 feet in length by 44 feet beam, of 5,000 indicated power, and in every way a magnificent ship.

The Bothnia and Scythia were also built in 1874, by the Cunard company, as representatives of the new type, but were smaller than the ships of the same period built by the Inman and White Star lines. They were of 6,080 tons displacement and 2,780 indicated horse-power, with a speed of 13 knots. The pressure carried was 60 pounds. These ships had by far the largest cargo-carrying capacity (3,000 tons measurement) and passenger accommodation (340 first-cabin) of any yet built by the company. With the addition of this great number of steamers, change was not to be expected for some years; and it was not until 1879, when the Guion company put afloat the Arizona, that a beginning was made of the tremendous rivalry which has resulted in putting upon the seas, not only the wonderful ships which are now running upon the Atlantic, but in extending greatly the size and speed of those employed in other service.

Several things had combined in the latter part of this decade to bring about this advance. The great change between 1860 and 1872, from the causes already noted, which had reduced coal consumption by one-half, was followed by the introduction of corrugated flues and steel as a material for both boilers and hull. With this came still higher pressures, which were carried from 60 to 80 and 90 pounds. In August, 1881, a very interesting paper was read by Mr. F. C. Marshall, of Newcastle, before the Institution of Mechanical Engineers, in which he showed that a saving of 13.37 per cent. in fuel had been arrived at since 1872. The general type of engine and boiler had remained the same in these nine years, but the increased saving had been due chiefly to increased pressures. It is curious that at the reading of both the paper by Sir Frederick Bramwell, in 1872, and that of Mr. Marshall, in 1881, there should have been pretty generally expressed a feeling that something like a finality had been reached. So little was this opinion true that, though over thirteen per cent. saving had been effected between these two dates, a percentage of gain more than double this was to be recorded between the latter date and 1886. In these matters it is dangerous to prophesy; it is safer to believe all things possible. Certainly the wildest dreamer of 1872 did not look forward to crossing the Atlantic at 20 knots as a not unusual speed.

In 1874 triple-expansion engines had been designed for the Propontis by Mr. A. C. Kirk, of Napier & Sons, of Glasgow, which, on account of failure in the boilers which were used, did not give at first the results hoped for. In 1881 the Messrs. Napier fitted the Aberdeen with engines of the same kind, steam at 125 pounds pressure per square inch being used. In the next two years the change proceeded slowly, but by 1885 the engineering mind had so largely accepted it that a very large proportion of the engines built in that year were on this principle, and at the present it may be regarded as being fully accepted as was the compound engine ten years since. The saving in fuel is generally reckoned at from twenty to twenty-five per cent., or, to put it more graphically, in the words of Mr. Parker, Chief Engineer Surveyor of Lloyds, in his interesting paper, read in July, 1886, before the Institution of Naval Architects: “Two large passenger steamers, of over 4,500 gross tonnage, having engines of about 6,000 indicated horse-power, built of the same dimensions, from the same lines, with similar propellers, are exactly alike in every respect, except so far as their machinery is concerned. One vessel is fitted with triple-expansion engines, working at a pressure of 145 pounds per square inch; while the other vessel is fitted with ordinary compound engines, working at a pressure of 90 pounds per square inch. Both vessels are engaged in the same trade and steam at the same rate of speed, viz., 12 knots an hour. The latter vessel in a round voyage of 84 days burns 1,200 tons more coal than the former.”

In the epoch 1879 to 1887 the following great ships had been placed upon the Liverpool and New York lines, their best speeds to that date being as shown:

Days. Hours. Minutes. 1. Etruria 6 5 31 2. Umbria (sister ship) slightly longer 3. Oregon 6 10 35 4. America 6 13 44 5. City of Rome 6 18 0 6. Alaska 6 18 37 7. Servia 6 23 55 8. Aurania 7 1 1

The time had thus been shortened much more than half since 1840, and had been lessened forty per cent. since 1860.

In addition to the ships mentioned, there had been placed upon the line from Bremen to New York (between 1879 and 1886) touching at Southampton, England, eight new ships of the North German Lloyd, which form 28 altogether, the most compact and uniform fleet upon the Atlantic. The Trave, Saale, and Aller, were then marvels of splendor and comfort, ranking in speed and power very little short of the fastest of the Liverpool ships. They, as were the others of the company’s eight “express” steamers, were built by the great firm of John Elder & Co., of Glasgow, their machinery being designed by Mr. Bryce-Douglas, to whose genius was also due that of the Etruria and Umbria, the Oregon, Arizona, and Alaska. The engines of the Trave, Saale, and Aller, however, were triple-expansion, as were the Gascogne, Bourgogne, and Champagne (their equals in speed and equipment), of the French Compagnie Transatlantique, which were built in France. All these steamers are of steel, with cellular bottoms carefully subdivided, and fitted with a luxury and comfort quite unknown thirty years ago.

It was difficult, if not almost impossible, to go beyond them without a change to twin screws. If more than the Umbria’s power was to be developed it was safer to use it through two shafts, and the depth of water on the New York bar is a hindrance to the use of a much greater diameter of screw. Mr. Griscom, of Philadelphia, was the bold manager to take the first step by laying down the Inman Company’s ships in 1887, the first of which, the City of New York, was ready for trial in thirteen months after the signing of the contract with Messrs. James & George Thompson, of Clydebank: a wonderful performance. The Teutonic and Majestic quickly after took shape in the yard of Messrs. Harland & Wolff, of Belfast, the place of birth of all of the White Star fleet. These two lines were thus the first to accept the changed conditions, and the City of New York and City of Paris of the former, and the Teutonic and Majestic of the latter, still mark the high-water mark of achievement, both as regards performance as a machine and the comfort and luxury of the passenger. The “Cities,” as they are familiarly termed, are 560 feet in length, by 63 feet broad, displace 13,000 tons, and indicate over 18,000 horse-power. The two White Stars are 582 feet long, by 57 feet 6 inches broad, of 12,000 tons displacement, and of nearly equal horse-power with their two great competitors. In less than twenty years these lines had thus nearly doubled the size of their ships, and more than tripled their power.

It may be of interest to the American public to know that the City of New York and City of Paris are but two of the largest fleet under one management on the North Atlantic. Though under one control it is under three flags—English, Belgian, and American—our own, thanks to the wisdom of Congress, covering but a small contingent, though our law-makers for several years have been besieged to allow them to become American in nationality as well as ownership. It would certainly seem that they were quite as worthy of it as some of our importations of another kind, but we shall probably have to wait for a little more breadth of thought and idea under the dome at Washington before this change can be brought about.

The building of these four ships seems to have given an impetus to the whole of the steamship world: the Hamburg-American lines started into new life with the Columbia, Normannia, Augusta Victoria, and Fuerst Bismarck, twin screws of 9,500 and 10,500 displacement, which have averaged in their best runs from New York to Southampton 19.01, 18.91, 18.31, and 19.78 knots in the order named, the distance being about 3,075 knots.

The French Company has added the twin-screw Touraine of 11,675 tons and 18-1/2 knots sustained speed to their already splendid fleet, and the North German Lloyds have since 1887 built the Lahn, Spree, and Havel, all single screws; and the two last of 7,000 tons with 13,000 horse-power and a speed of 18-1/2 knots. These latter ships would probably have been twin screws had the docks of Bremerhaven afforded sufficient width of entrance; but whether this be the case or not, the probability is that in the future it will be the dock which will yield and not the ship. There is no need to make comparison of these ships in equipment. Luxury has been carried as far as the present human invention and imagination can take it. Suites for families are arranged with private sitting-rooms and private tables, so that, barring the roll so uneasy to the unhappy landsman, one could scarce know the change from the most luxurious apartment of the Brevoort.

Such are the ships of to-day, but displacement from their eminence is already in discussion. The builders of the City of New York are guaranteeing a vessel to cross the Atlantic in 5 days, or at a speed of 23-1/2 knots, the probable elements of this projected vessel being given by _Engineering_ as a length of 630 feet and a beam of 70, with 33,000 indicated horse-power. It is a long step, but one can hardly doubt it will soon be taken.

But that this step will be greatly aided by any material change in the marine steam engine in the very near future is not probable, the difficulty is now not with the engine but with the boiler; forced draught and the higher pressures call imperatively for a new development in the steam producer; leaky tubes and joints and a rapid deterioration through the effort to keep up the high pressures necessary for the successful performance of the new type of engine are the shortcomings which must be successfully combated before we can make another great advance. Unfortunately there is another draw-back, for which the remedy will be even more difficult, the suffering of the firemen induced by the greater heat of the higher pressures. Let us hope that genius will yet invent a mechanical stoker and that we may not of necessity subject our fellow-beings to the 140° too frequently found in our modern fire-rooms.

We may fitly place here a tabulation of the very wonderful achievements of the ships first mentioned, based on official data in _Engineering_ of June 19 and July 10, 1891, and covering, in the case of the Liverpool ships, the season of 1890, except for the City of Paris, which is for 1889. (See table on p. 45.)

The coal consumption is also officially stated by the journal from which the above is compiled as follows: The City of New York, 328 tons: Teutonic, 316 tons: Etruria, 330 tons. This shows an actual expenditure of about 1.6 lb. per hour in the case of the Teutonic: slightly greater for the City of New York, and over 1.9 for the Etruria.

But in the month of August, 1891, both the Teutonic and Majestic won still greater laurels, the latter crossing from Queenstown to New York in 5 days 18 hours and 8 minutes; the former in 5 days 16 hours and 31 minutes, and averaging for the run of 2,778 miles 20.35 knots per hour, the best day’s run being 517 knots.

_Fastest Passages of the more Important Steamers between New York and English Ports during the Season of 1890._[5]